A. 3
B. 11
C. 13
D. None of these
Explanation:
461 + 462 + 463 + 464
=> 461(1 + 4 + 16 + 64)
461(85) = 17 (5 * 461) So it is divisible by 17.
A. 1350
B. 1450
C. 1550
D. 1421
Explanation:
(50 – ?/29)% of 4200 = 3√196
A. 15 min
B. 20 min
C. 27.5 min
D. 30 min
Explanation:
Part filled by (A + B) in 1 minute = (1/60 + 1/40) = 1/24
Suppose the tank is filled in x minutes.
Then, x/2(1/24 + 1/40) = 1
x/2 * 1/15 = 1 => x = 30 min.
A. 6 days
B. 8 days
C. 10 days
D. 12 days
2 children = 1 man
(8 children + 12 men ) = 16 men
Now, less men, more days
12 : 16 : 9 : x
x = 16×9/12=12 days
A. 7
B. 8
C. 9
D. 10
Explanation:
96% —- 12
144% —- ?
96/144 * 12 = 8
A. 17
B. 29
C. 18
D. 19
Let the average after the 16th inning be P.
So, the average after the 15th inning will be (P-3) Hence, 15(P-30) + 64 = 16P => P = 19
A. Rs. 15
B. Rs. 16
C. Rs. 17
D. Rs. 18
Explanation:
Let the cost price for the manufacturer be Rs. x. Then, 125% of 120% of 118% of x = 30.09.
125/100 * 120/100 * 118/100 * x = 3009/100
177/100 x = 3009/100 => x = 17